Cryptid of the Day #1: Isle of Man Sea Serpent

So here's something new; each day I'll dedicate a small entry for a bizarre cryptid that's too obscure to be in a Cryptid Quest card, but are fascinating none of the less. Enjoy.  

Name: Isle of Man Sea Serpent

First Reported: Between 1880 to 1910

Location: Isle of Man, UK

Bizarre Theory: Sea Serpent

Skeptical Theory: Misidentified Seal